<template>
  <div :class="className" :style="{height:height,width:width}" />
</template>

<script>
import echarts from 'echarts'
require('echarts/theme/macarons') // echarts theme
import resize from './mixins/resize'

const animationDuration = 6000

export default {
  mixins: [resize],
  props: {
    className: {
      type: String,
      default: 'chart'
    },
    width: {
      type: String,
      default: '100%'
    },
    height: {
      type: String,
      default: '300px'
    }
  },
  data() {
    return {
       dates : [],
      chart: null
    }
  },
  mounted() {
// 获取当前日期及往前推近7天的日期的日部分
for (let i = 7; i > 0; i--) {
  let currentDate = new Date();
  currentDate.setDate(currentDate.getDate() - i);
  this.dates.push(currentDate.getDate());
}

// 打印结果
console.log('近7天的日期的日部分:', this.dates);


    this.$nextTick(() => {
      this.initChart()
    })

  },
  beforeDestroy() {
    if (!this.chart) {
      return
    }
    this.chart.dispose()
    this.chart = null
  },
  methods: {
    initChart() {
      this.chart = echarts.init(this.$el, 'macarons')

      this.chart.setOption({
        title: {
    text: '用电量/周', // 标题文本
    left: 'center', // 标题水平居中
    textStyle: {
      color: '#000', // 黑色
      fontSize: 12 // 12px
    }
  },
        tooltip: {
          trigger: 'axis',
          axisPointer: { // 坐标轴指示器，坐标轴触发有效
            type: 'shadow' // 默认为直线，可选为：'line' | 'shadow'
          }
        },
        grid: {
          top: 10,
          left: '2%',
          right: '2%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [{
          type: 'category',
          data:this.dates,
          axisTick: {
            alignWithLabel: true
          }
        }],
        yAxis: [{
          type: 'value',
          axisTick: {
            show: false
          }
        }],
        series: [{
          name: '用电量',
          type: 'bar',
          stack: 'vistors',
          barWidth: '60%',
          data: [79, 52, 200, 334, 390, 330, 2200],
          animationDuration,
          color: '#3ea4fd', 
          }, ]
      })
    }
  }
}
</script>
